<SEC-DOCUMENT>0001562180-24-000720.txt : 20240129
<SEC-HEADER>0001562180-24-000720.hdr.sgml : 20240129
<ACCEPTANCE-DATETIME>20240129142429
ACCESSION NUMBER:		0001562180-24-000720
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20240125
FILED AS OF DATE:		20240129
DATE AS OF CHANGE:		20240129

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Rollinson Jonathan Paul
		CENTRAL INDEX KEY:			0001878513
		ORGANIZATION NAME:           	

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-40718
		FILM NUMBER:		24572762

	MAIL ADDRESS:	
		STREET 1:		C/O SYLVAMO CORPORATION
		STREET 2:		6400 POPLAR AVENUE
		CITY:			MEMPHIS
		STATE:			TN
		ZIP:			38197

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			Sylvamo Corp
		CENTRAL INDEX KEY:			0001856485
		STANDARD INDUSTRIAL CLASSIFICATION:	PAPER MILLS [2621]
		ORGANIZATION NAME:           	04 Manufacturing
		IRS NUMBER:				862596371
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		6077 PRIMACY PARKWAY
		CITY:			MEMPHIS
		STATE:			TN
		ZIP:			38119
		BUSINESS PHONE:		901-519-8000

	MAIL ADDRESS:	
		STREET 1:		6077 PRIMACY PARKWAY
		CITY:			MEMPHIS
		STATE:			TN
		ZIP:			38119
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>primarydocument.xml
<DESCRIPTION>PRIMARY DOCUMENT
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0508</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2024-01-25</periodOfReport>

    <notSubjectToSection16>false</notSubjectToSection16>

    <issuer>
        <issuerCik>0001856485</issuerCik>
        <issuerName>Sylvamo Corp</issuerName>
        <issuerTradingSymbol>SLVM</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001878513</rptOwnerCik>
            <rptOwnerName>Rollinson Jonathan Paul</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>6077 PRIMACY PARKWAY</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>MEMPHIS</rptOwnerCity>
            <rptOwnerState>TN</rptOwnerState>
            <rptOwnerZipCode>38119</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>true</isDirector>
            <isOfficer>false</isOfficer>
            <isTenPercentOwner>false</isTenPercentOwner>
            <isOther>false</isOther>
            <officerTitle></officerTitle>
            <otherText></otherText>
        </reportingOwnerRelationship>
    </reportingOwner>

    <aff10b5One>false</aff10b5One>

    <nonDerivativeTable></nonDerivativeTable>

    <derivativeTable>
        <derivativeTransaction>
            <securityTitle>
                <value>Deferred Stock Units</value>
            </securityTitle>
            <conversionOrExercisePrice>
                <footnoteId id="F1"/>
            </conversionOrExercisePrice>
            <transactionDate>
                <value>2024-01-25</value>
            </transactionDate>
            <deemedExecutionDate></deemedExecutionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>A</transactionCode>
                <equitySwapInvolved>false</equitySwapInvolved>
            </transactionCoding>
            <transactionTimeliness></transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>76.2657</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>0.00</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <exerciseDate>
                <footnoteId id="F1"/>
            </exerciseDate>
            <expirationDate>
                <footnoteId id="F1"/>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Common Stock</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>76.2657</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>473.9646</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </derivativeTransaction>
        <derivativeTransaction>
            <securityTitle>
                <value>Dividend Equivalent Units</value>
            </securityTitle>
            <conversionOrExercisePrice>
                <footnoteId id="F2"/>
            </conversionOrExercisePrice>
            <transactionDate>
                <value>2024-01-25</value>
            </transactionDate>
            <deemedExecutionDate></deemedExecutionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>A</transactionCode>
                <equitySwapInvolved>false</equitySwapInvolved>
            </transactionCoding>
            <transactionTimeliness></transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>18.3477</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>0.00</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <exerciseDate>
                <footnoteId id="F2"/>
            </exerciseDate>
            <expirationDate>
                <footnoteId id="F2"/>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Common Stock</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>18.3477</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>73.5389</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </derivativeTransaction>
    </derivativeTable>

    <footnotes>
        <footnote id="F1">Consists of deferred stock units (&quot;DSUs&quot;) granted to the reporting person under the Sylvamo Corporation Restricted Stock and Deferred Compensation Plan for Non-Employee Directors (the &quot;Plan&quot;) in connection with a dividend declared on shares of Sylvamo Corporation common stock. Each DSU is the economic equivalent of one share of Sylvamo Corporation common stock. Under the Plan, the DSUs settle according to the reporting person's election of either five (5) or ten (10) years upon the last day of the applicable Performance Year (as defined in the Plan), or if earlier, January of the next calendar year following the year in which the reporting person terminates service as a director. The number of DSUs has been rounded to 4 decimal points.</footnote>
        <footnote id="F2">Consists of dividend equivalent units (&quot;DEUs&quot;) accrued on restricted stock units (&quot;RSUs&quot;) previously granted to the Reporting Person under the Sylvamo Corporation Restricted Stock and Deferred Compensation Plan for Non-Employee Directors (the &quot;Plan&quot;), in connection with a dividend paid on shares of Sylvamo Corporation common stock. The DEUs will vest and be settled on the same terms and conditions as the original RSUs to which they relate. Each DEU represents the right to receive, subject to vesting, one share of Sylvamo Corporation common stock. The number of DEUs has been rounded to 4 decimal points.</footnote>
    </footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>St. John Daugherty, attorney in fact for J. Paul Rollinson</signatureName>
        <signatureDate>2024-01-29</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
